Lamp.



i PATBNTED AUG. 25, 190s.` R,..M'.DIX0N.

LAMP. APLIOA-T'ION FILED FEB. 7. 1901.

N0 MODEL.

UNITED STATES Patented August 25, 1903.

PATENT OFFICE.

LAMP.

SPECIFICATION forming part of Letters Patent No. 737,214, dated August25, 1903,

Application filed February 7 To all whom it may concern: Y

Be it known that I, ROBERT MUNN DIXON, of East Orange, in the county ofEsseX,'State of New Jersey, have invented certain new and usefulImprovements in Lamps, of which the followingis a completespeciiication,ref erenoe being had to the accompanying drawing.

The object of my invention is to produce improvements in lamps forburning gas, and especially for burning acetylene gas or like gases.

In the drawing accompanying this specification the lamp illustratedbeing particularly designed for railway-car lighting 'is on that accountprovided with,V means for inclosing and shielding the ,iame or flames ofthe burner from the disturbing edects of drafts or air-currents as wellas with means for distributing the light onall sides of the lamp.

It is essential to the 'practical operation of a lamp for burningacetylene gas that the gas should be separated or protected as much aspossible from the heat of combustion, so as to be kept cool until afterit passes the burner-tips. The lamp shown in the drawing illustrates oneand that a preferred form of embodiment of my invention foraccomplishing the several objects referred to-na'mely, the burning ofacetylene gas in a lamp provided with means for protecting the iiame ofthe burner from injurious drafts and adapted to distribute the lightfrom the flame equally below the lamp.

In the accompanying drawing I illustrate, partially in elevation andpartially in central vertical longitudinal section, a preferred form oflamp embodying my invention.

Referring to the numerals on the drawing,

.1 indicates the frame of my lamp, which is of skeleton form, beingprovided with legs 2, by which it is secured to a ring 3, adapted to besupported by suitable means-for' example, the ordinary bracket-arms (notshown)- but for the reception of which threaded recesses 4 and 5inthering are illustrated. The frame 1 carries a post 6, which supportsthe head portion of the lamp, consisting, for example, of a cap 7 andtransparent dome 8. The details of the cap portion do not requirespecification, being of familiar construction in the art, and it is onlyreferred to in order ,1901. serai No. '46,392'. (No model.)

-to afford general description of the lamp complete. The post 6 isdesigned to support the dome 8, so that its lower edge 10 will be inpro'ximityto but separated from the top of the ring 3 'in order toprovide an air-inlet space between the edge 10 and the ring entirelyaround the lamp. The ring 3 is shown as provided with lugs 1-1 forholding the dome' in xed relations to the ring. A

lThe frame 1 supports or assists in supporting a burner, illustr'atedasa cluster of burners 14. The frame and burners are shown asconneoted,\as by a tube 15, screwing at one end upon'v the end of anipple 16, projecting from the bottom of the frame 1, and at the otherend to arod 17, whose lower end is threaded tothe burner-stem 18. A cupreflector 19 is illustrated as carried between the tube and the rod 17.

To the bottom ofthe-ring 3 is secured a partition 20, having areflective face and provided with an internalrannular wall 21. The

vpartition -20 is designed to support a chimney 22, which is preferablymade of transparent material-for example, mica. The 'chimney 22 deliversthe products of combustion from the burners 14 to a flue or cluster ofiiues 24, supported, as by the frame 1, and communicating through saidframe with the interior of the chimney 22. The means for the dischargeof the products of combustion istherefore continuous and unbrokenbetween the bowl and the place of discharge.

` It may herebe observed that of the rays of `light proceeding in alldirections from each flame supported by the burner-tips those whichstrike the reliecting-surface of the partition 20 are deflecteddownward, while those which strike the surface of the cup reflector are.reliected at oblique angles upwardly through the dome 8. shadows abovethe lamp are dispersed, and for that reason largely the form ofembodiment of my invention illustrated is presented as the preferredform. Y

The ring 3 supports, as uponf an inturned annular ledge 26, atransparent or glass bowl 27. The interior of this bowl, which containsthe burner, is, as will appear, protected against all injurious draftsand is supplied with air solely through a ring of apertures 28 aroundthe partition 20 and the aperture By this means darkV IOO through whichthe pipe 30 passes, which derive the supply of air which they delivermainly from the space between the lower edge l0 of the dome S and thering A The lamp, as above specified, with the exception of the burnersand the means by which they are supported and air supplied by the framel, is of well-known construction and is here presented only as a meansof explaining the principle of my invention as applied to and embodiedin a complete lamp.

30 indicates the gas-supply pipe, which, being passed through aloosely-titting aperture provided for it in the partition 20,communicates at one end with the recess 5 in the ring 3 and at the otherwith the internal passages of the burners la, the recess 5 beingincommunication in the manner common to lamps of this class with a sourceof gas-supply.

The burner-tips 25 illustrated may be of any preferred form designed forthe burning of acetylene gas,those illustrated being shown only by Wayof example and being of a type well known in the art.

The pipe 30 is located in the current of cold air which descends intothe bowl 27 through the ring of apertures 28 and the aperture throughwhich the pipe passes in the partition 2O and is representative in thatrelation of means for keeping the gas supplied to the burners cool untilit issues from the burnertips, which, as specified, is the main objectto be attained by my invention.

In operation, gas being supplied to the burners, fiames from theburner-tips are supported by the volume of air indrawn through theapertures 2S by the drat't of the lamp, and that incoming draft from theoutside atmosphere is utilized for maintaining the gas-supply at asuliiciently low temperature. By reason of the continuous means ofdischarge of the products of combustion and the air of the air-inletapertures a strong current of air is while the lamp is lighted keptflowing inwardly against the interior of the bowl 27. Itis this currentof air, promoted and directed as stated, which is utilized foraccomplishing the object of my invention.

What I claim is- 1. In a lamp for burning acetylene gas or like gases,the combination with an inclosed burner and means of gas-supply thereto,of means for keeping the gas supplied to the burner comparatively cooluntil it reaches approximately the point of ignition.

2. In a lamp for burning acetylene gas or like gases, the combinationwith an inclosed burner and means of gas-supply thereto, of means formaintaining the gas-supply at a sufficiently low temperature by the airindrawn by the draft of the lamp.

3. In a lamp for burning acetylene gas or like gases, the combinationwith an inclosed burner and means of gassupply thereto Within theburner-inclosu re, of means for keeping the gas supplied to the burnercomparatively cool until it reaches approximately the point of ignition.

4. The combination with a lamp, comprising a frame, a bowl, a partition,and continu ous means for the discharge of the products of combustionlfrom the bowl through the partition, of means of air-supply to the bowlthrough the partition, a burner Within the bowl, and a gas-supply pipecommunicating with the burner, said pipe being located within the areaof the air-supply current.

5. The combination with a lamp comprising a frame, bowl, partition, andcontinuous means for the discharge of the products of combustion throughthe partition, of materially-defined air-apertures in the partitionadapted to supply air against the inner wall of the bowl, a burnerwithin the bowl, and a gas-supply pipe communicating with the burner andlocated in proximity to the inner Wall of the bowl.

6. The combination with a lamp comprising a frame, bowl, partition, andcontinuous means for the discharge of the products of combustion throughthe partition, of materially-delined air-apertures in the partitionadapted to supply air against the inner wall of the bowl, a burnerwithinthe bowl, a gassupply pipe communicating with the burner and located inproximity to the inner wall of the bowl, and'meansjn addition to thepipe, connecting the burner with the frame.

7. The combination with a lamp comprising a ring, a bowl, a partitionand means for the passage of the products ofV combustion from the bowlthrough the partition, all supported by said ring, of means ofair-supply to the bowl through the partition, and a gassupply pipelocated within the area of the airsupply current and secured to thering.

In testimony of all which I have hereunto subscribed my name.

ROBERT M. DIXON.

Witnesses:

FREDERICK E. KESSINGER, RANDOLPH PARMLY.

